Stairway jointer



FIG. 1 is a front and bottom perspective view of a stairway jointer, showing our design;

FIG. 2 is a side view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof. 

CLAIM The ornamental design for a stairway jointer, as shown and described. 